It would be interesting to see if Amazon were to add more give-some-to-charity options to their cart checkout process, if people would be just as willing to add

It would be interesting to see if Amazon were to add more give-some-to-charity options to their cart checkout process, if people would be just as willing to add that spend (or more) to their total. I think theirs a big opportunity for charities with not a lot of risk to AMZN.